612121672811943 has 64 divisors (see below), whose sum is σ = 1128562413696000. Its totient is φ = 319947444173952.

The previous prime is 612121672811939. The next prime is 612121672811947. The reversal of 612121672811943 is 349118276121216.

612121672811943 is a `hidden beast` number, since 6 + 1 + 2 + 12 + 167 + 281 + 194 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (612121672811939) and next prime (612121672811947).

It is not a de Polignac number, because 612121672811943 - 2² = 612121672811939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612121672811943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612121672811947) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2938860480 + ... + 2939068757.

It is an arithmetic number, because the mean of its divisors is an integer number (17633787714000).

Almost surely, 2^{612121672811943} is an apocalyptic number.

612121672811943 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

612121672811943 is a deficient number, since it is larger than the sum of its proper divisors (516440740884057).

612121672811943 is a wasteful number, since it uses less digits than its factorization.

612121672811943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5877929301 (or 5877929295 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 612121672811943 in words is "six hundred twelve trillion, one hundred twenty-one billion, six hundred seventy-two million, eight hundred eleven thousand, nine hundred forty-three".